nanog mailing list archives

Re: HE.net, Fremont-2 outage?


From: Joe Greco <jgreco () ns sol net>
Date: Wed, 4 Nov 2009 16:56:19 -0600 (CST)

On Wed, Nov 4, 2009 at 2:08 PM, Raphael Carrier
<raphael.carrier () gmail com>wrote:

Agreed batteries are unreliable, an alternative to battery based UPS
are flywheel energy storage devices, they come either as an integrated
solution with the diesel generator (i think cat offers such a package)

Yup, just ask 365 Main how reliable they are -
http://365main.com/status_update.html

I'm not saying that battery-based UPS's are better, but no matter what type
of system you look at you're going to find failures.

I would point out that my cursory review of the document linked above
leaves a very positive impression.  I don't know the actual details well
enough to know if there is any reason to doubt the document...

I would, however, tend to trust a vendor who disclosed events in this 
manner.  Even the best systems can fail.  How a failure is handled is
in many ways the more important factor; being transparent about it is
good for confidence.

Best to plan for the occasional issue.

... JG
-- 
Joe Greco - sol.net Network Services - Milwaukee, WI - http://www.sol.net
"We call it the 'one bite at the apple' rule. Give me one chance [and] then I
won't contact you again." - Direct Marketing Ass'n position on e-mail spam(CNN)
With 24 million small businesses in the US alone, that's way too many apples.


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